CD99

Gene

CD99 molecule (Xg blood group)

HGNCHGNC:7082 EnsemblENSG00000002586 NCBI Gene4267

Locus: gene with protein productLocation: Xp22.32 and Yp11.3

Also known as

Symbols and names change; identity (the HGNC ID) does not. Previous and alternative forms are kept distinct.

Also known asMIC2 · MIC2X · MIC2Y

View full nomenclature history (6)

Previous symbolsMIC2, MIC2X, MIC2Y

Previous namesantigen identified by monoclonal antibodies 12E7, F21 and O13, CD99 antigen, CD99 molecule

Associated diseases

via associated_with

Diseases linked to this gene through the canonical GENE→DISEASE (associated_with) relation, drawn from Open Targets' top-ranked associations by overall score — not the full association set. Disease-level detail lives on each disease's own page.

Neurodegenerative Diseases

Primary Ovarian Insufficiency

Neoplasms

Precursor Cell Lymphoblastic Leukemia-Lymphoma

Leukemia, Myeloid, Acute

Drawn from Open Targets’ top 10 associations by overall score for this gene — the subset resolved to a canonical disease. Lower-ranked associations, and diseases not yet canonicalised, are not shown.

Gene family

HGNC gene-group membership.

Blood group antigensCD moleculesPseudoautosomal region 1

Provenance

HGNCCanonical human gene identity from HGNC (release 2026-07-07), updated 2023-01-20.

Open TargetsGene–disease associations from the Open Targets Platform.